1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bija089 [108]
3 years ago
7

1. Disease can be caused by viruses, bacteria,

Biology
1 answer:
Y_Kistochka [10]3 years ago
5 0

Answer:

Emphysema

Explanation:

You get it from airborne stuff like smoke I'm pretty sure.

You might be interested in
Match the staining techniques with their purpose.
Dennis_Churaev [7]

A Negative stain such as India ink or Congo red-Look for the presence of a capsule.

This stain method is usually used to stain the area around the microorganism.

B The Gram stain-Divide bacteria into two groups based on cell wall structure (thick vs. thin).  

This is type of differential staining used to distinguish organisms based on their staining properties. Gram + and Gram- bacteria stain different because of different cell wall structure.

C The Ziehl-Neelsen Acid-fast stain- Identify bacteria with waxy cell walls such as: Mycobacterium tuberculosis (the cause of TB).  

This is also differential staining method which uses heat and phenol to derive dye into the cells with lipid-rich walls.

D Simple stain with a basic dye-Stain microbes a bright color to make it easier to see them in bright field microscopy.

One dye is used in simple staining in order to determinate the size, shape and arrangement of the cells.

E The Schaeffer-Fulton Endospore stain-Identify Bacillus or Clostridium species, such as the causative agents of anthrax, botulism, tetanus and gangrene.  

This is a special type of staining only used for the bacteria that can form endospores. Bacteria are first treated with heat and then with malachite green, which is very strong stain that can penetrate endospores.

5 0
3 years ago
This is the role of a species in an ecosystem, consisting of such things as what it eats, when it eats, and where it lives.
Anika [276]

Answer:

Your answer would be a <u><em>NICHE</em></u>.

Explanation:

when an animal in an ecosystem consisting of such things as what it eats, when it eats, and where it lives would be called a <u><em>NICHE</em></u>.

3 0
3 years ago
Read 2 more answers
genetics book g how do you know that only a single gene is responsible for he color diferences between these snakes?
mariarad [96]

Answer:

Here is the full question:

An albino corn snake is crossed with a normal colored corn snake. The offspring are all normal-colored. When the first generation progeny snakes are crossed among themselves, they produce 32 normal colored snakes and 10 albino snakes.

a. How do you know that only a single gene is responsible for the color differences between these snakes?

b. which of these phenotypes is controlled by the dominant allele?

c. a normal colored female snake is involved in a test cross. This cross produces 10 normal colored and 11 albina offspring. what are the genotypes of the parents?

Explanation:

First of all, in genetics, Phenotype are the observable physical properties of an organism; these include the organism's appearance, development, and behavior. An organism's phenotype can be determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences on these genes.

Allele, which can also be called allelomorph, is any one of two or more genes that may occur alternatively at a given site on a chromosome. Alleles may occur in pairs, or we may have multiple alleles affecting the phenotype of a particular trait. The combination of alleles that an organism carries is its genotype. If the paired alleles are the same, the organism’s genotype is said to be homozygous for that trait. If they are different, the organism’s genotype is heterozygous. A dominant allele (A) will override the traits of a recessive allele (a) in a heterozygous pairing.

(a) In the question, we have two phenotypes seen in the second generation of this cross: normal and albino. Therefore, only one gene with two alleles is needed to control the phenotypes like colour of the snakes observed. The 3:1 ratio of these phenotypes in the F2 generation will be seen only if a single gene is involved.

(b) The allele controlling the normal phenotype (A) is dominant to the allele controlling the albino phenotype (a).

(c) The male parent’s genotype is aa. The normally colored offspring must receive an A allele from the mother, so the genotype of the normal offspring of the testcross is Aa. The albino offspring must receive an a allele from the mother, so the genotype of the albino offspring of the testcross is aa. Thus, the female parent must be heterozygous Aa.

7 0
3 years ago
Please answer each
nexus9112 [7]

Answer:

Function of each male reproductive system-

They produce, maintain and transport sperm and semen . They discharge sperm into the female reproductive tract. They produce and secrete male sex hormones.

Function of each female reproductive system-

The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur.

8 0
3 years ago
you are given two nucleic acids; one rna and the other dna. what are the main features to determine which is the dna?
BigorU [14]

Answer:

DNA is a long polymer with a phosphate backbone and deoxyriboses. Adenine, guanine, cytosine, and thymine are the four nitrogenous bases. The backbone of RNA is made up of ribose and phosphate. Adenine, guanine, cytosine, and uracil are four nitrogenous bases.

So DNA is two stranded, RNA is single stranded.

Lmk if you need more :)

Explanation:

4 0
2 years ago
Other questions:
  • Anne has been observing human embryos in different stages. She wants to study the gastrula phase. How will she find it? by looki
    8·2 answers
  • Identify and describe the features found on the ocean basin floor
    8·1 answer
  • Which statement best describes a direct result of damage to a phospholipid bilayer? The balance of ions inside a cell will be di
    14·2 answers
  • Which of the following is a TRUE statement regarding the skeletal system? There are 28 vertebrae that cover the spinal cord. The
    6·1 answer
  • ANSWER ASAPPPPPPPPP PLEASE
    12·2 answers
  • Can someone help me please
    6·1 answer
  • Plants and __________ formed a mutualistic relationship in the form of mycorrhizae and were the first multicellular organisms on
    15·1 answer
  • 6. What two places might a free-floating DA molecule end up?
    9·1 answer
  • Can someone say why polar bears are going extinct? Please explain your answer
    14·2 answers
  • Which structure is unique to living organisms a-caspid b- nucled acids c-nucleus d- cytoplasm​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!